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/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Simon McDuff - initial API and implementation
**************************************************************************/
package org.eclipse.emf.internal.cdo.util;
import org.eclipse.emf.cdo.internal.protocol.revision.CDOIDProvider;
import org.eclipse.emf.cdo.internal.protocol.revision.InternalCDORevision;
import org.eclipse.emf.cdo.internal.protocol.revision.delta.CDOFeatureDeltaVisitorImpl;
import org.eclipse.emf.cdo.internal.protocol.revision.delta.CDOListFeatureDeltaImpl;
import org.eclipse.emf.cdo.protocol.model.CDOFeature;
import org.eclipse.emf.cdo.protocol.revision.CDOReferenceProxy;
import org.eclipse.emf.cdo.protocol.revision.delta.CDOAddFeatureDelta;
import org.eclipse.emf.cdo.protocol.revision.delta.CDOListFeatureDelta;
import org.eclipse.emf.cdo.protocol.revision.delta.CDORevisionDelta;
import org.eclipse.emf.cdo.protocol.revision.delta.CDOSetFeatureDelta;
import java.util.List;
/**
* @author Simon McDuff
*/
public class RevisionAdjuster extends CDOFeatureDeltaVisitorImpl
{
private CDOIDProvider idProvider;
private InternalCDORevision revision;
public RevisionAdjuster(CDOIDProvider idProvider)
{
this.idProvider = idProvider;
}
public void adjustRevision(InternalCDORevision revision, CDORevisionDelta revisionDelta)
{
this.revision = revision;
revisionDelta.accept(this);
}
@Override
public void visit(CDOAddFeatureDelta delta)
{
// Delta value must have been adjusted before!
revision.setValue(delta.getFeature(), delta.getValue());
}
@Override
public void visit(CDOSetFeatureDelta delta)
{
CDOFeature feature = delta.getFeature();
Object value = delta.getValue();
if (value != null && feature.isReference() && !(value instanceof CDOReferenceProxy))
{
revision.setValue(feature, idProvider.provideCDOID(value));
}
}
@Override
@SuppressWarnings("unchecked")
public void visit(CDOListFeatureDelta deltas)
{
CDOFeature feature = deltas.getFeature();
List<Object> list = (List<Object>)revision.getValue(feature);
int[] indices = ((CDOListFeatureDeltaImpl)deltas).reconstructAddedIndices();
for (int i = 1; i <= indices[0]; i++)
{
int index = indices[i];
Object value = list.get(index);
if (value != null && feature.isReference() && !(value instanceof CDOReferenceProxy))
{
value = idProvider.provideCDOID(value);
list.set(index, value);
}
}
}
}
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